Wire-tightening device.



Patented Mar. 27, 1917.

H. H. LAMPERT.

WIRE TIGHTENING DEVICE.

APPLICATION FILED NOV. 8. I915.

HENRY H. LAMPERT, OF CHICAGO, ILLINOIS.

wmn-rrenrnivmo DEVICE.

Specification of Letters Patent.

Patented Mar. 27, 1917.

App1ieation filed November 8, 1915. Serial No. 60,353.

To all whom it may concern:

Be it known that I, HENRY H. LAMBERT, acitizen of the United States of America, and a resident of Chicago, coimty of Cook, and State of Illinois, have invented certain new and useful Improvements in Wire- Tightening Devices, of which the following is a specification. 7

The main objects of this invention are to provide an improved form of wire tightening device wherein the wire, when tightened, temporarily locks the device in position to hold the wire taut; to provide an improved arrangement of gripping means on the tightening member to which the wire may be quickly and conveniently attached or detached, both before and after the tightening operation; and to provide an improved device, similar in operation to that shown in my copending application Serial No. 58,786, filed October 30, 1915, which is inexpensive to manufacture and simple in operation.

An illustrative embodiment of this invention is shown in the accompanying drawings in which:

Figure 1 is a perspective view of the improved form of wire tightening device.

Fig. 2 is a side elevation of the same as it would be used in tightening wires.

This wire tightening device has been designed particularly for use for tightening and temporarily clamping the wires used in concrete mold construction, where a wire embraces a post on one side of the mold and extends across to the other side of the mold. In the construction shown in the drawings, the base or bearing member 1 is provided with a pair of integral lugs 2 centrally located thereon to which the lever 4 is pivoted by means of the lug 3 and pin 5.

The lever 4 is of T-shape and has a stem part or handle 6 and transversely disposed arms or head part 7. These parts are reinforced by webs 8 and 9 respectively. The lug 3 is formed on the under side of the head 7 in alinement with the stem 6.

The head 7 has transverse lugs or arms which extend beyond the edges of the plate '1, and slots 10 are formed in the ends thereof to provide spaced shoulders or lugs 11 and 12. The open ended slots 10 are disposed transversely to the plane of the stem 6 and arms 7, and are adapted to receive the ends of the wire 14 which is to be tightened. The arrangement of the lug 3, with respect to the transverse part 7, is such that as the lever is swung from one side of the,

plate 1 to the other, the Wire is wrapped around the lugs 11 and 12 and moved across the pivot 5, as will be observed from Fig. 2.

The device when used in tightening wires in concrete mold construction is operated in the following manner:

The plate 1 is set against the post or other part 13 of the mold, and the lever 4 is set to the position shown in full outline in Fig. 2. The ends of the wire 14 are placed in the slots 10 and bent over the lugs 11. The narrowness of the slots and the right angle bend in the wire insure a proper clamping of the wires to the lever during the tightening operation. The lever 4 is then swung to the position shown in dotted outline in Fig. 2, whereupon the wire is wrapped around the lugs 12 and at the same time carried across the pivot 5. The strain upon the wire, therefore holds the lever 4 in its shifted position, where it is temporarily locked to keep the wire taut. lVhen it is desired to remove the device, the lever is thrown to the position shown in full outline in Fig. 2, whereupon the ends of the wire may be quickly and conveniently pushed sidcwise out of the slots 10.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim:

1. A wire tightening device, comprising a base, a lever pivoted to said base so as to swing in a plane perpendicular thereto, a transversely disposed arm on said lever adjacent to the pivot and extending parallel thereto, and a pair of spaced lugs on the end of said arm for gripping a wire, said spaced lugs being arranged to cause the wire to wrap around said arm as said lever is swung from one position to another and to move the adjacent part of the wire from one side to the other of the pivot so as to lock said lever in position for holding the wire taut.

2. A wire tightening device, comprising a base, a T-shaped lever pivoted thereon to swing in a plane perpendicular to said base and transverse to the plane of said lever, and means at the ends of the transverse parts of said T-shaped lever for gripping wires, said means being arranged to cause the wires to wrap therearound as said lever is swung from one position to another and move the adjacent parts of the wires from one side to the other of said pivot for look ing said lever in position to hold the Wires taut.

3. A wire tightening device, comprising a base, and a T-shaped lever pivoted thereon to swing in a plane perpendicular to said base and transverse to the plane of said lever, said transverse parts of said T-shaped lever having slots formed in the ends thereof adapted to grip wires, said slots being arranged to cause the wires to wrap around said parts as said lever is swung from one position to another and move the adjacent parts of the wires from one side to the other of said pivot for locking said lever in' a position for holding the wires taut.

i. A wire tightening device, comprisinga base, a lug integrally formed thereon, a T- shaped lever, a lug formed on the transverse part of said T-shaped lever, a pin pivotally connecting the lug on said lever to the lug on said base whereby said lever is adapted to swing in a plane perpendicular to said base, the transverse partof said lever having the endsthereof extending beyond said plate andhaving slots extending inwardly from the ends thereof adapted to receive wires, said slots being arranged so as to cause the wires to wrap around the ends of said part when said lever is swung from one position to another and move the adjacent parts of the wires from one side to the other of said pin for locking said lever in position to hold the wires taut.

' Signed at Chicago this 6th day of November, 1915. V

HENRY H. LAMPERT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

